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Paraniite-(Y)

Big Photo

Costa Balzi Rossi, Magliolo, Maremola Valley, Savona Province, Liguria, Italy
© G. Armellino

Show Paraniite-(Y) Photos (2)
Formula:
Ca
 
2
Y(AsO
 
4
)(WO
 
4
)
 
2
System:TetragonalColour:Cream-yellow
Lustre:Adamantine, Vitreous
This page provides mineralogical data about Paraniite-(Y).

Classification of Paraniite-(Y)

IMA status:Approved
Nickel-Strunz 10th (pending) edition ID:7.GA.15

7 : SULFATES (selenates, tellurates, chromates, molybdates, wolframates)
G : Molybdates, Wolframates and Niobates
A : Without additional anions or H2O
Dana 8th edition ID:49.4.7.1

49 : HYDRATED MOLYBDATES AND TUNGSTATES
4 : Compound Molybdates and Tungstates
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Type Occurrence of Paraniite-(Y)

Type Locality:Mount Cervandone, Devero Alp (Devero Valley; Val Devero), Baceno, Ossola Valley, Verbano-Cusio-Ossola Province, Piedmont, Italy

Physical Properties of Paraniite-(Y)

Lustre:Adamantine, Vitreous
Diaphaneity (Transparency):Translucent
Colour:Cream-yellow

Crystallography of Paraniite-(Y)

Crystal System:Tetragonal
Class (H-M):4/m - Dipyramidal
Space Group:I41/a
Cell Parameters:a = 5.135(1) Å, c = 33.882(5) Å
Ratio:a:c = 1 : 6.598
Unit Cell Volume:V 893.41 ų (Calculated from Unit Cell)
Z:4
Morphology:Rough elongated bipyramids
X-Ray Powder Diffraction:
d-spacingIntensity
4.674 (18)
3.059 (100)
2.571 (19)
1.901 (32)
1.818 (16)
1.674 (17)

Optical Data of Paraniite-(Y)

Type:Uniaxial (+)
RI values: nω = 1.870 nε = 1.920
Maximum Birefringence:δ = 0.050

Chart shows birefringence interference colour range (at 30µm thickness) and does not take into account mineral colouration.
Surface Relief:Very High

Chemical Properties of Paraniite-(Y)

Formula:
Ca
 
2
Y(AsO
 
4
)(WO
 
4
)
 
2
Essential elements:As, Ca, O, W, Y
All elements listed in formula:As, Ca, O, W, Y

Relationship of Paraniite-(Y) to other Species

Related Minerals - Nickel-Strunz Grouping):

- +
7.GA.05Fergusonite-(Ce)
(Ce,La,Nd)NbO
 
4
7.GA.05Fergusonite-(Nd)
(Nd,Ce)(Nb,Ti)O
 
4
7.GA.05Fergusonite-(Y)
YNbO
 
4
7.GA.05Powellite
Ca[MoO
 
4
]
7.GA.05Scheelite
Ca[WO
 
4
]
7.GA.05Stolzite
Pb[WO
 
4
]
7.GA.05Wulfenite
Pb[MoO
 
4
]
7.GA.10Formanite-(Y)
YTaO
 
4
7.GA.10Iwashiroite-(Y)
Y(Ta,Nb)O
 
4

Other Names for Paraniite-(Y)

Synonyms:
IMA1992-018
Other Languages:
German:Paraniit-(Y)
Russian:Параниит-(Y)

Other Information

Health Warning:No information on health risks for this material has been entered into the database. You should always treat mineral specimens with care.

References for Paraniite-(Y)

Reference List:Schweizerische mineralogische und petrographische Mitteilungen (1994): 74: 155-160.

New Minerals (1997), New Minerals 1990-1994.

Internet Links for Paraniite-(Y)

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  • Raman and XRD data at RRUFF project
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    Localities for Paraniite-(Y)

    (TL) indicates type locality. ? indicates mineral may be doubtful at this locality. All other localities listed without reference should be considered as uncertain and unproven until references can be found.
    Italy
     
    • Liguria
      • Savona Province
        • Maremola Valley
          • Magliolo
    		Van King
    • Piedmont
      • Verbano-Cusio-Ossola Province
        • Ossola Valley
          • Baceno
            • Devero Alp (Devero Valley; Val Devero)
    		Lapis, 20 (7/8), 41-64+76.
    Switzerland
     
    • Grischun (Grisons; Graubünden)
      • Hinterrhein Valley
        • Ferrera Valley
          • Ausserferrera
    		Brugger J., Gieré R., Grobéty B., Uspensky E., 1998. Scheelite-powellite and paraniite-(Y) from the Fe-Mn deposit at Fianel, Eastern Swiss Alps. Am. Miner., 83: 1100-1110.
    Mineral and/or Locality
    Google
     
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